Please add me to the list of users that found this forum, hoping that it is simply the presence of Immunet on my computer that is causing the constant rebooting. I did run the Update Troubleshooter and an error that I found was that it could not start Windows to install the update. Another thread I found on Microsoft suggests pausing or even uninstalling A/V software long enough to get the install through. I can't find the Immunet Removal Tool to try this solution. Can you point me in that direction so I can test the hypothesis? Thanks for the help.